MESON Chess Problem Database

Problem Display
PID: 151446 (b2r1k2/P1pp3K/4pBB1/q3p2p/7r/b4R2/8/1Q6 w - - 0 1)

Dawson, Thomas Rayner

British Chess Magazine, 1935

b2r1k2/P1pp3K/4pBB1/q3p2p/7r/b4R2/8/1Q6

#2

6 + 11

15256 TRD Scrapbook 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Rb8
      • 2.Qxb8#
      • 2.axb8Q#
      • 2.axb8R#
    • 1...Be7
      • 2.Bg7#
    • 1...c6
      • 2.Bxh4#
    • 1...d5
      • 2.Bxh4#
  • Keys
    • 1.Qb8!
      • threat
        • 2.Qxd8#
      • 1...Rxb8
        • 2.axb8Q#
        • 2.axb8R#
      • 1...Rc8
        • 2.Qxc8#
      • 1...Re8
        • 2.Qxe8#
      • 1...Be7
        • 2.Bg7#
      • 1...c5
        • 2.Qd6#
      • 1...c6
        • 2.Bxh4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • B(a);SBLOCK::R(B)+B(C),DCHECK
    • P(g);S_CUTB(i)::R(B)+B(C),XR(b)
    • P(h);S_CUTB(i)::R(B)+B(C),XR(b)
  • Actual
    • Q(A);P_PINR(j)
    • Threat
      • QAR2(A),XR(j)
    • Vars
      • R(j);N_SPINR(j),OGATE,XQ(A)::PXR(j)=Q
      • R(j);OGATEB::QAR(A),XR(j)
      • R(j);OGATE::QAR1(A),XR(j)
      • B(a);SBLOCK::R(B)+B(C),DCHECK
      • P(g);OGATE::QAB(A)
      • P(g);S_CUTB(i)::R(B)+B(C),XR(b)
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